package cn.easybuy.filter;

import java.io.IOException;


import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;

@WebFilter(urlPatterns={"/*"},filterName="EncodeFilter",initParams={@WebInitParam(name="encode",value="UTF-8")})
public class EncodeFilter implements Filter {

	private static String encode;
	@Override
	public void destroy() {
		// TODO Auto-generated method stub

	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		if(null == request.getCharacterEncoding()){
			request.setCharacterEncoding(encode);
		}
		chain.doFilter(request, response);

	}

	@Override
	public void init(FilterConfig config) throws ServletException {
		// TODO Auto-generated method stub
		encode = config.getInitParameter("encode");
	}

}
